A Rational mechanistically-based approach for allocating highway costs

dc.contributor.authorProzzi, Jolanda
dc.contributor.authorHong, Feng
dc.contributor.authorProzzi, J.A. (Jorge)
dc.date.accessioned2008-06-18T06:22:29Z
dc.date.available2008-06-18T06:22:29Z
dc.date.issued2007-07
dc.descriptionThis paper was transferred from the original CD ROM created for this conference. The material on the CD ROM was published using Adobe Acrobat technology. The original CD ROM was produced by Document Transformation Technologies Postal Address: PO Box 560 Irene 0062 South Africa. Tel.: +27 12 667 2074 Fax: +27 12 667 2766 E-mail: doctech@doctech.co.za URL: http://www.doctech.co.zaen
dc.description.abstractPaper presented at the 26th Annual Southern African Transport Conference 9 - 12 July 2007 "The challenges of implementing policy?", CSIR International Convention Centre, Pretoria, South Africa. ABSTRACT:The allocation of highway costs is constantly debated among legislatures, highway agencies, and highway users as it directly relates to concerns about equity in terms of cost responsibility and actual user charges. One of the major challenges in highway cost allocation stems from the need to estimate pavement damage by different vehicle classes. Normally, the calculation of damage caused by heavy vehicles to the highway infrastructure utilizes the concept of Equivalent Single Axle Load (ESAL) or E80. This concept was empirically established after the AASHO Road Test almost half a century ago. Although the E80 concept is widely used in pavement design, it has a number of shortcomings when applied for the estimation of pavement damage by different vehicle classes. Some of these limitations include: failure to account for specific infrastructure and environmental conditions, disregard of the differences in traffic configurations and composition, and the inability to capture different distress types. This leads to a fairly inaccurate and generic estimation of pavement damage by vehicle class. This paper proposes an innovative and more rational highway cost allocation approach based on the recently completed guide for the “Mechanistic-Empirical Design Guide of New and Rehabilitated Pavement Structures” developed under the National Cooperative Highway Research Program (NCHRP) Project 1-37A. The Guide accounts for all factors that contribute to pavement deterioration, thereby addressing the shortcomings of an ESAL-based analysis listed earlier. Estimates for pavement damage attributable to each vehicle class can thus be accurately simulated. For the purposes of this study, traffic data collected at a weigh-in-motion station in Texas were used to estimate the highway cost shares of different vehicle classes, given varying pavement structural capacity.en
dc.format.extent463388 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationProzzi, J, Hong, F & Prozzi,JA 2007,'A Rational mechanistically-based approach for allocating highway costs', Paper presented to the 26th Annual Southern African Transport Conference, South Africa, 9 - 12 July 2007. 14p.en
dc.identifier.isbn192001702X
dc.identifier.urihttp://hdl.handle.net/2263/5950
dc.languageeng
dc.language.isoenen
dc.publisherSATCen
dc.relation.ispartofSATC 2007
dc.rightsUniversity of Pretoriaen
dc.subjectTransport policiesen
dc.subjectHighway costsen
dc.subjectPavement damageen
dc.subjectVehicle classesen
dc.subjectEquivalent Single Axle Load (ESAL) (E80)en
dc.subjectAASHO Road Testen
dc.subject.lcshTransportation -- Congressesen
dc.subject.lcshRoads -- South Africa -- Maintenance and repair -- Congressesen
dc.subject.lcshTransportation -- Economic aspects -- Congressesen
dc.titleA Rational mechanistically-based approach for allocating highway costsen
dc.typeEventen
dc.typePresentationen

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